/*
 *   Copyright 2008 Francois Fernandes
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package com.googlecode.opendoclibrary.internal.impl.fs;

public abstract class Assert
{
    public static void isTrue( boolean expression, String message )
    {
        if ( !expression )
        {
            throw new IllegalArgumentException( message );
        }
    }

    public static void isNull( Object object, String message )
    {
        if ( object != null )
        {
            throw new IllegalArgumentException( message );
        }
    }

    public static void notNull( Object object, String message )
    {
        if ( object == null )
        {
            throw new IllegalArgumentException( message );
        }
    }
}
